9 articles in this issue
Wojciech Batko,Jerzy Stojek
Test of assessing a suitability of the phase trajectory pattern for diagnostics of condition changes of axial piston pumps is undertaken in the presented paper. Accomplishment reasons of investigations together with their laboratory realizations are given... see more
Piotr Duda,Dawid Rzasa
Construction elements of power blocks such as collectors, separators or steam valves work in hazardous environment. During start-up and shut-down operations they are exposed to sudden temperature and pressure changes, that cause high stresses at certain p... see more
Krzysztof Kotwica
The article presents the influence of work conditions of rotary-tangential picks on their wear while compact rocks mining. There was mainly presented the influence of applying high-pressure support and spraying the tangent-rotary tools with water jets on ... see more
Krzysztof Kotwica,Piotr Gospodarczyk,Grzegorz Stopka,Antoni Kalukiewicz
The article presents a new solution of a mining head with asymmetrical disc tools of a complex motion trajectory for hard rocks mining. The developed and manufactured head is to be an alternative for traditional milling heads used in roadheaders. The basi... see more
Michal Kozupa,Jerzy Wiciak
The paper is an analytical and experimental study of smart structure, which consist of steel plate with bonded PZTs and porous elastomer layer. Active control of sound radiation from a clamped at the edge square plate is examined. Simulations and numerica... see more
Kinga Nalepka,Ryszard Pecherski
Using the results of High Resolution Transmission Electron Microscopy studies of epitaxial layers fcc metal/corundum we have proposed atomistic model of the interfacial structure of the Al2O3-Ni composite. Then, we have carried out the verification of the... see more
Jan Sidor
Vibratory mills are applied in processes of mechanical production of powders, micropowders, nanopowders and nanostructures. The paper comprises a description of tube mills operation: vibratory and rotary-vibration ones. It also presents their application ... see more
Jan Sikora,Jadwiga Turkiewicz
This paper presents the results of the expanded research program on sound absorbing properties of granular materials (granular polypropylene, foamed polystyrene, gravelite, rubber, mineral wool, and high-silica sand) being often applied as sound absorbing... see more
Andrzej Swiatoniowski,Ryszard Gregorczyk
In this paper an probabilistic model of the friction phenomena on the work- back up rolls contact surface has been presented. It has been shown that such character of the disturbance in distribution of zones with static and kinetic friction. can be regard... see more